Composition for removing carbonaceous deposits.



UNITED STATES PATENT OFFICE.

EDWARD R. BULE, on NEW YORK, N. Y.

COMPOSITIONFOR REMOVING CABBONACEOUS DEPOSITS.

No Drawing.

To all whom it may concern:

Be it known that I, EDWARD R. BULE, a -citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Compositions for Removing carbonaceous Deposits, of which the following is a full, clear, and exact specification.

o This invention relates to a composition capable of dissolving the binding elements of carbon in internal combustion or explosive engines or motors, so that the carbon deposits, incrustation, or scale, may be 1., conveniently and quickly removed from parts not readily accessible.

In the operation of a motor of this kind, imperfect combustion produces a soot which becomes mixed with the lubricating oil forming a carbonaceous or resinous sub stance which is baked under the action of the intense heat due to the explosions. This carbonaceous and resinous substance becomes very hard and clings tenaciously to the inner surfaces of the cylinder, piston and valves, and soon offers serious resist, ance to the proper working of the parts.

It is the object of the presentinvention to produce a composition which will act quickly upon these substances, reducing them to a powdered form in which they may be blown out.

It is also my aim to produce a composition that may be readily applied or injected seinto the cylinder without necessitating the dismantling of the motor.

The solvents for resinous and carbonaceous substances, which I find to be most eflicacious, such as alcohol. ether, acetone 40 and carbon bisulfid, are all very volatile, and experiments have shown that in order to hold them on the hot inner surfaces of a motor long enough to do their Work of reducing the deposits above referred to, it is 5 necessary to combine with said solvents some retarding substance. I have discovered that water is the best retarder that can be used because it does not mix with the lubricating oil or affect the lubrication of the cylinder as petrol products are known to do, and for the further reason that it is converted into steam which tends to loosen the carbon deposits from the metal. I have also found that cyanid of potash, in comparatively small proportion to the water,

Specification of Letters Patent.

, Patented Dec. 8, 1914..

Application filed July 10, 1914. Serial No. 850,255.

may also be used in addition to the water and give beneficial results, especially as said cyanid of potash acts as a cleanser as well as a retarder and removes all oxids from the metal surfaces with which the composition comes in contact.

In my experiments I have found that acetone and carbon bisulfid may be used inter: changeably in my improved composition, and that the proportions of theseveral ingredients may be varied somewhat andstill give the desired results. The following formulas may be taken as indicating approximately the limits of variation which may be made in the proportions of the ingredients without de arting from my invention or losing the e ects of the same:

Alcohol from 23% to 28% or from 2 oz. to 2% oz.

Acetone (or carbon bisulfid) from 5i to 5% or from 1} oz. to 31} drms.

Ether from I} to 2% or; from oz. to 1 drms.

Cyanid of potash from 201 to 15% or from 1% to 1 oz.

Water 50% ,or 3% oz.

It will be observed that according to these formulas the proportions of solvents to re tarders may vary from 29%% solvents and l0l% retarders to 35% solvents and 65% retarders. Any substantial increase .in the proportion of retarders above 701% will interfere with the action of the solvents, and any substantial increase in the proportion of the solvents above 35% will result in the evaporation of said solvents before they have a chance to act sufficiently upon the carbon. Experiment with a greater proportion of solvents than that named resulted in almost instantaneous evaporation of such solvents, leaving a white precipitate on top of the carbon. 7

The compound converts the carbon deposits into a powder or soot comprised of fine particles, rather than into a scale or solid lumps, and this powder or soot may be readily blown out through the exhaust ports as soon as the engine is started. There is nothing in the compound to corrode the metal surfaces, the effect of the compound being rather to cleanse and polish such metal surfaces by reason of the presence of cyanid of potash. It will also be observed that none of the elements of the compound are capable of attacking the lubricating oil or interfering with the lubrication of the parts, which is a very important consideration.

The compound may be readily sprayed into the cylinder through one of the valve ports or the port in which the spark plug is fitted, by any suitable injector! I employ the variety of solvents mentioned in order to meet different-conditions found to exist in different motors.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent of the United States is:

1. A composition of the character de' scribed, consisting of solvents, including alcohol,-ether and acetone, and retarders, including a predominating proportion of water, the proportion of the solvents being between about 292% and about 35% and the proportion of the retarders being be tween about 65% andabout 701%.

2. A composition of the character described, consisting of solvents, including alcohol, ether and acetone, and retarders, including cyanid of potash and water, the proportion of the solvents being between about 29%% and about 35% and the proportion of the retarders being between about 65% and about 7O?;%.

3. A composition of the character described, consisting of the following ingredients in substantially the proportions given, namely: alcohol from 23% to 28%, ether fro 1-}% to 2%, acetone from 53 to 5%, cyanid of potash 201% to 15%, and water 50%.

In testimony whereof-I have signed my name to this specification in the presence of two attesting witnesses.

I EDWARDR. BULE.

Witnesses:

GEo. A. HUTCHINSON, CHAs. E. RIORDAN. 

